/*+
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* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). +
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* All rights reserved.+
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* This component and the accompanying materials are made available+
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* under the terms of "Eclipse Public License v1.0"+
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* which accompanies this distribution, and is available+
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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*+
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* Initial Contributors:+
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* Nokia Corporation - initial contribution.+
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*+
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* Contributors:+
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*+
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* Description:  Interface for message information of history file+
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*+
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*/+
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+
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+
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#ifndef __MCALOGGERMESSAGE_H__+
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#define __MCALOGGERMESSAGE_H__+
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+
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//INCLUDES+
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+
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#include <e32std.h>+
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+
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//FORWARD DECLARATIONS+
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+
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class RWriteStream;+
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+
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// CLASS DECLARATION+
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+
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/**+
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 *  Interface for message information of history file+
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 *+
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 *  @lib CALogger.dll+
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 *  @since 2.1+
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 */+
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class MCALoggerMessage+
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    {+
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+
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    public:+
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+
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        /**+
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         * Destructor.+
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         */+
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        virtual ~MCALoggerMessage() {};+
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+
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    public: // Interface+
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+
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        /**+
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         * Internalize the contact instance data.+
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         * Used by MCALoggerFactory.+
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         * @since 2.1+
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         * @param aStream The stream into which to internalize+
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         */+
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        virtual void InternalizeL( RReadStream& aStream ) = 0;+
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+
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        /**+
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         * Externalize the contact instance data.+
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         * Used by CCALoggerWriter+
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         * @since 2.1+
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         * @param aStream The stream into which to externalize+
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         */+
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        virtual void ExternalizeL( RWriteStream& aStream ) const = 0;+
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+
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        /**+
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         *	Disk space needed for saving message in externalize.+
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         *	@return Memory need in bytes.+
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         */+
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        virtual TInt MessageSizeInBytesL() const = 0;+
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    };+
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+
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#endif      // __MCALOGGERMESSAGE_H__+
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+
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// End of File+
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